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@nit-rh gums js-trnt @frn EDWARD W. BRETTELL, OF NEWARK, NEW JERSEY. Leim-S Parent No. 63,204, time March .26, 1867.

.IMPROVEMENT N DOSE-LOUKS.

@te Stimuli ninna in in 1li-rre trttns ntmt :mh milling part t nge same.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, EDWARD W. BRETTELL, of Newark, in the county of Essex, and lStateof' New Jersey',l

have invented certain new and useful improvements in Lvoeks'for Doors, &c'.,'and do hereby declare that the follo-wingis a full and exa'et description thereof, and therefore pray that Letters Patent :may be granted to me. The aecompanying drawings form a part of. this specieation.

Figui-.el is a front viewof my improvement, showing the natural position of its several parts.

Figure 2 is a view of a vertical tumbler.

I Figure 3 is ai frontend edge view of the casing.

Figure 4 is a front and edge view of thelever, dog, and key-socket.

Figure is a view o'f the key.

Figure 6 isa front view, with, the front plate removed, so as to show it in a locked position.

Figure 7 is a view unlocked. i

Figure 8 is an edge view, showing the positief@ `of. the tumblers in the recess of the key-socket with the key out. I l

Figure 9 is an edge view with the key in. l

Similar letters of reference indicate 'like parts in all the figures.

My invention is intended to make a lock more secure against burglars, and little objectionableon account of' cost. l

To enable others skilled in' the artto make and use my invention, I willproceed to describe its construct-ion vandoperation, by the aid of the drawings and of the letters'o' reference marked thereon.

Figure 1 is a 'case of tumhlers which can be arranged in all classes ot`1ocks, the casingv being eitherseparate from or lcast in the lock. i

Figure 2, S, is a,selfzieting, vertical, slidingtumbler, with a slot, o, to admitthe dog d on the lever B; By the use of the proper key the tumblers S areraised so as to` bring the slots o opposite to the dog d on the lever B, when', byturniug thekey, the lever B may be thrown freelyback'lwards or forwards, as shown in 4figs. 6 and 7.'.

Figure 3,"A, is a case with two checks, c ando', whichare-pla'ced in any lock, for the purpose of holding the tumblers in their properplaces, as shown in fig. 8.l Y v Figure 4, B, is a lever with aV dog, d, attached to thevkey-socket m, forthe purpose of throwing back the Abolts orlatehes of' locks, 'fis a square end of 'the key-socket m, which may be placed in the knoblhole' of a lock, thus making it applicable to all latch-locks. R is a recess in the key-socket m, in which the tumblers S set when the key is out! partly closing the key-hole, as "shown in iig'.4 8. I

.Figure 5, K, is a flat keypso'notched on the edge as to raise the tumblers S, withtheir slots, o, opposite the dog d on the lever B, thus allowing the free action of lever B to throw a. bolt o r latch. :v is a slot `in the keylsocket 'litl to admit a key', as shown at lig. '4.

Having now fully described my improvemenwhat I claim as new, and desire to lsecureby Letters Patent, is as follows i l; The eneasing-of a series of self-acting, vertical, sliding tumblers, with their operating' dog, within an independent detachable case, substantially as herein shown and described. i

2. The dog d attached to the lever B,lsojas to act .',independently of.:both' the bolt andthe lock-case, substantially as herein shown' and described. i

EDWARD W. BRETTELL.

Witn esses ARTHUR PABKINsoN, SAMUEL; Beo'rnt.l 

